All-time weather records — Duncan, OK

Record high
111.0°F
June 28, 1980
Record low
-8.0°F
January 3, 1947
Wettest day
9.85 in
May 19, 1955

Climate change signal in Duncan

0%

of Duncan's all-time daily heat records were set in the last decade (0 of 366 records since 2015).

0%

of all-time daily cold records were set in the last decade (0 of 366 records since 2015).

If records were spread evenly across the station's history, you'd expect roughly 5% per decade. Decade-by-decade, here's where each record-breaking day was set:

Decade Heat records set # Cold records set #
1930s
34
9
1940s
55
63
1950s
91
57
1960s
39
59
1970s
40
51
1980s
25
53
1990s
21
43
2000s
31
29
2010s
30
2
2020s
·
·

Records are the all-time daily extremes that are still standing — each daily record can only be held by one year. The station's earliest hot record was set in 1937, the latest in 2011. Period of observation: 1936-2025.

Records by month

Month Hottest day Coldest day Wettest day
January 84.0°F — Jan 25, 1950 -8.0°F — Jan 3, 1947 2.09 in — Jan 18, 2020
February 90.0°F — Feb 23, 1996 -2.0°F — Feb 2, 1985 3.42 in — Feb 15, 1938
March 97.0°F — Mar 31, 1940 1.9°F — Mar 11, 1948 4.50 in — Mar 31, 2007
April 100.0°F — Apr 12, 1972 26.1°F — Apr 12, 1940 4.33 in — Apr 30, 2025
May 104.0°F — May 22, 1939 34.0°F — May 1, 1960 9.85 in — May 19, 1955
June 111.0°F — Jun 28, 1980 39.0°F — Jun 28, 2003 5.37 in — Jun 13, 2016
July 109.9°F — Jul 3, 1980 55.0°F — Jul 6, 1972 4.32 in — Jul 14, 1989
August 111.0°F — Aug 9, 1970 55.0°F — Aug 24, 1966 9.21 in — Aug 6, 2019
September 108.0°F — Sep 2, 1939 36.0°F — Sep 27, 1942 6.22 in — Sep 22, 2018
October 102.0°F — Oct 1, 1977 19.0°F — Oct 31, 1993 5.70 in — Oct 30, 1941
November 90.0°F — Nov 6, 1945 14.0°F — Nov 15, 1940 3.97 in — Nov 3, 2024
December 88.0°F — Dec 24, 1955 -2.0°F — Dec 22, 1989 2.80 in — Dec 20, 1991

Click a month to see every daily record for that month in Duncan.